Granny care

I found this website an although I'm not a new Mom, I am a grandmother to a gorgeous little girl of almost 13 months. Currently I have the pleasure of looking after her for 8 hours a day, 3 times a week. She still has morning and afternoon nap but would love ideas of how I can keep her occupied, entertained and also a bit educational. I am still fairly active. Any ideas will be so welcome. Thanks